demonstrator
/'demәnstreitә/
📖 中文释义
- n. 论证者, 证明者, 指示者, 示威者
- [医] 示教者
🧩 词形变化
📘 English Definition（英文释义）
- n. a teacher or teacher's assistant who demonstrates the principles that are being taught
- n. someone who demonstrates an article to a prospective buyer
- n. someone who participates in a public display of group feeling